/Engine/Source/Runtime/GeometryCore/Public/Spatial/SparseDynamicPointOctree3.h
Do a rough ballpark configuration of the RootDimension, MaxTreeDepth, and MaxPointsPerCell tree config values, given a bounding-box dimension and estimate of the total number of points that will be inserted. This is primarily intended to be used withParallelInsertDensePointSet()
void ConfigureFromPointCountEstimate ( double MaxBoundsDimension, int CountEstimate )